You can use Glue, Both Ready and Dry, Which You Need to Independently Dilute with Water. Wallpaper Rolls Must Be Cut Into Pieces, Which in Their Length Are Equal to the Length or Width of the Room. Apply Glue with a Brush or Roller on the Back of the Wallpaper. Gently Stick The Canvas with a Back to the Ceiling. With The Help of a Construction «Butterfly» or Clean Roller, Unwind the Canvas on the Ceiling and «Expel» All the Air from Under Under the Canvas. Fabric Glue The Junction in the Joint. Be Sure to Carefully Smooth Them Soy Stick Smoothly and Smoothly to the Ceiling.